and this is the reason why \(\alpha = \kappa /2\)  decays from 1 to 0.5 in the \((t_{f}/\mathcal {T})^{\alpha }-\)  based rheologies[1]}, [2]}, [3]}, [4]}, [5]}. In the work of Ref.[6]}, the dynamical processes of the granular flow are strongly correlated to the size of structural scales, and the jamming transitions are related to the emergence of large scale structures[7]}. A characterized length scale related to time ratios is deduced to govern the rheology of granular flows[8]}. In the present work, we generalizes these \((t_{f}/\mathcal {T})^{\alpha }-\)  and characterized length scale based works and provide a universal rheological law for granular flow in the whole flow regimes.
